// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/base/user_input_monitor.h"

#include <memory>

#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "build/build_config.h"
#include "media/base/keyboard_event_counter.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkPoint.h"

#if defined(OS_LINUX)
#include "base/files/file_descriptor_watcher_posix.h"
#endif

namespace media {

class MockMouseListener : public UserInputMonitor::MouseEventListener {
public:
    MOCK_METHOD1(OnMouseMoved, void(const SkIPoint& position));

    virtual ~MockMouseListener() { }
};

#if defined(OS_LINUX) || defined(OS_WIN)
TEST(UserInputMonitorTest, KeyPressCounter)
{
    KeyboardEventCounter counter;

    EXPECT_EQ(0u, counter.GetKeyPressCount());

    counter.OnKeyboardEvent(ui::ET_KEY_PRESSED, ui::VKEY_0);
    EXPECT_EQ(1u, counter.GetKeyPressCount());

    // Holding the same key without releasing it does not increase the count.
    counter.OnKeyboardEvent(ui::ET_KEY_PRESSED, ui::VKEY_0);
    EXPECT_EQ(1u, counter.GetKeyPressCount());

    // Releasing the key does not affect the total count.
    counter.OnKeyboardEvent(ui::ET_KEY_RELEASED, ui::VKEY_0);
    EXPECT_EQ(1u, counter.GetKeyPressCount());

    counter.OnKeyboardEvent(ui::ET_KEY_PRESSED, ui::VKEY_0);
    counter.OnKeyboardEvent(ui::ET_KEY_RELEASED, ui::VKEY_0);
    EXPECT_EQ(2u, counter.GetKeyPressCount());
}
#endif // defined(OS_LINUX) || defined(OS_WIN)

TEST(UserInputMonitorTest, CreatePlatformSpecific)
{
#if defined(OS_LINUX)
    base::MessageLoopForIO message_loop;
    base::FileDescriptorWatcher file_descriptor_watcher(&message_loop);
#else
    base::MessageLoopForUI message_loop;
#endif // defined(OS_LINUX)

    base::RunLoop run_loop;
    std::unique_ptr<UserInputMonitor> monitor = UserInputMonitor::Create(
        message_loop.task_runner(), message_loop.task_runner());

    if (!monitor)
        return;

    MockMouseListener listener;
    // Ignore any callbacks.
    EXPECT_CALL(listener, OnMouseMoved(testing::_)).Times(testing::AnyNumber());

#if !defined(OS_MACOSX)
    monitor->AddMouseListener(&listener);
    monitor->RemoveMouseListener(&listener);
#endif // !define(OS_MACOSX)

    monitor->EnableKeyPressMonitoring();
    monitor->DisableKeyPressMonitoring();

    monitor.reset();
    run_loop.RunUntilIdle();
}

} // namespace media
